private NvGPUThermalSettings GetThermalSettings()
{
NvGPUThermalSettings settings = new NvGPUThermalSettings();
settings.Version = NVAPI.GPU_THERMAL_SETTINGS_VER;
settings.Count = NVAPI.MAX_THERMAL_SENSORS_PER_GPU;
settings.Sensor = new NvSensor[NVAPI.MAX_THERMAL_SENSORS_PER_GPU];
if (!(NVAPI.NvAPI_GPU_GetThermalSettings != null &&
NVAPI.NvAPI_GPU_GetThermalSettings(handle, (int)NvThermalTarget.ALL,
ref settings) == NvStatus.OK))
{
settings.Count = 0;
}
return(settings);
}
public NvidiaGPU(int adapterIndex, NvPhysicalGpuHandle handle,
NvDisplayHandle?displayHandle)
: base(GetName(handle), new Identifier("nvidiagpu",
adapterIndex.ToString(CultureInfo.InvariantCulture)))
{
this.adapterIndex = adapterIndex;
this.handle = handle;
this.displayHandle = displayHandle;
NvGPUThermalSettings thermalSettings = GetThermalSettings();
temperatures = new Sensor[thermalSettings.Count];
for (int i = 0; i < temperatures.Length; i++)
{
NvSensor sensor = thermalSettings.Sensor[i];
string name;
switch (sensor.Target)
{
case NvThermalTarget.BOARD: name = "GPU Board"; break;
case NvThermalTarget.GPU: name = "GPU Core"; break;
case NvThermalTarget.MEMORY: name = "GPU Memory"; break;
case NvThermalTarget.POWER_SUPPLY: name = "GPU Power Supply"; break;
case NvThermalTarget.UNKNOWN: name = "GPU Unknown"; break;
default: name = "GPU"; break;
}
temperatures[i] = new Sensor(name, i, SensorType.Temperature, this,
new ParameterDescription[0]);
ActivateSensor(temperatures[i]);
}
int value;
if (NVAPI.NvAPI_GPU_GetTachReading != null &&
NVAPI.NvAPI_GPU_GetTachReading(handle, out value) == NvStatus.OK)
{
if (value > 0)
{
fan = new Sensor("GPU", 0, SensorType.Fan, this);
ActivateSensor(fan);
}
}
clocks = new Sensor[3];
clocks[0] = new Sensor("GPU Core", 0, SensorType.Clock, this);
clocks[1] = new Sensor("GPU Memory", 1, SensorType.Clock, this);
clocks[2] = new Sensor("GPU Shader", 2, SensorType.Clock, this);
for (int i = 0; i < clocks.Length; i++)
{
ActivateSensor(clocks[i]);
}
loads = new Sensor[3];
loads[0] = new Sensor("GPU Core", 0, SensorType.Load, this);
loads[1] = new Sensor("GPU Memory Controller", 1, SensorType.Load, this);
loads[2] = new Sensor("GPU Video Engine", 2, SensorType.Load, this);
memoryLoad = new Sensor("GPU Memory", 3, SensorType.Load, this);
control = new Sensor("GPU Fan", 0, SensorType.Control, this);
NvGPUCoolerSettings coolerSettings = GetCoolerSettings();
if (coolerSettings.Count > 0)
{
fanControl = new Control(control,
coolerSettings.Cooler[0].DefaultMin,
coolerSettings.Cooler[0].DefaultMax, coolerSettings.Cooler[0].CurrentPolicy, coolerSettings.Cooler[0].CurrentLevel);
fanControl.ControlModeChanged += ControlModeChanged;
fanControl.SoftwareControlValueChanged += SoftwareControlValueChanged;
ControlModeChanged(fanControl);
control.Control = fanControl;
}
Update();
}
public override void Update()
{
NvGPUThermalSettings settings = GetThermalSettings();
foreach (Sensor sensor in temperatures)
{
sensor.Value = settings.Sensor[sensor.Index].CurrentTemp;
}
if (fan != null)
{
int value = 0;
NVAPI.NvAPI_GPU_GetTachReading(handle, out value);
fan.Value = value;
}
uint[] values = GetClocks();
if (values != null)
{
clocks[0].Value = 0.001f * values[0];
clocks[1].Value = 0.001f * values[8];
clocks[2].Value = 0.001f * values[14];
if (values[30] != 0)
{
clocks[0].Value = 0.0005f * values[30];
clocks[2].Value = 0.001f * values[30];
}
}
NvPStates states = new NvPStates();
states.Version = NVAPI.GPU_PSTATES_VER;
states.PStates = new NvPState[NVAPI.MAX_PSTATES_PER_GPU];
if (NVAPI.NvAPI_GPU_GetPStates != null &&
NVAPI.NvAPI_GPU_GetPStates(handle, ref states) == NvStatus.OK)
{
for (int i = 0; i < 3; i++)
{
if (states.PStates[i].Present)
{
loads[i].Value = states.PStates[i].Percentage;
ActivateSensor(loads[i]);
}
}
}
else
{
NvUsages usages = new NvUsages();
usages.Version = NVAPI.GPU_USAGES_VER;
usages.Usage = new uint[NVAPI.MAX_USAGES_PER_GPU];
if (NVAPI.NvAPI_GPU_GetUsages != null &&
NVAPI.NvAPI_GPU_GetUsages(handle, ref usages) == NvStatus.OK)
{
loads[0].Value = usages.Usage[2];
loads[1].Value = usages.Usage[6];
loads[2].Value = usages.Usage[10];
for (int i = 0; i < 3; i++)
{
ActivateSensor(loads[i]);
}
}
}
NvGPUCoolerSettings coolerSettings = GetCoolerSettings();
if (coolerSettings.Count > 0)
{
control.Value = coolerSettings.Cooler[0].CurrentLevel;
ActivateSensor(control);
}
NvMemoryInfo memoryInfo = new NvMemoryInfo();
memoryInfo.Version = NVAPI.GPU_MEMORY_INFO_VER;
memoryInfo.Values = new uint[NVAPI.MAX_MEMORY_VALUES_PER_GPU];
if (NVAPI.NvAPI_GPU_GetMemoryInfo != null && displayHandle.HasValue &&
NVAPI.NvAPI_GPU_GetMemoryInfo(displayHandle.Value, ref memoryInfo) ==
NvStatus.OK)
{
uint totalMemory = memoryInfo.Values[0];
uint freeMemory = memoryInfo.Values[4];
float usedMemory = Math.Max(totalMemory - freeMemory, 0);
memoryLoad.Value = 100f * usedMemory / totalMemory;
ActivateSensor(memoryLoad);
}
}